In summary, level shifter devices are used in most systems to reconcile or bridge the logic levels of data interfaces between devices that reside on different voltage domains. There are two basic types of level shifter devices: direction controlled and auto direction. Direction controlled devices typically support larger current drive, wider voltage ranges, and faster data rates, and are usually available in wider bit widths. Auto direction devices do not require special software logic to control the translation direction. The Texas Instruments level shifter portfolio contains several different types of devices that collectively are able to address almost any application requirement.